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<body><h1><a href="http://ejohn.org/blog/processingjs/">Processing.js</a></h1>
<h2>TriangleFlower</h2>

<p>By Ira Greenberg 

Using rotate() and triangle() 
functions generate a pretty 
flower. Uncomment the line
// rotate(rot+=radians(spin));
in the triBlur() function for 
a nice variation.</p>

<p><a href="http://processing.org/learning/basics/triangleflower.html"><b>Original Processing.org Example:</b> TriangleFlower</a><br>
<script type="application/processing">
Point[]p = new Point[3];
float shift = 1.0;
float fade = 0;
float fillCol = 0;
float rot = 0;
float spin = 0;

void setup(){
  size(200, 200);
  background(0);
  smooth();
  fade = 255.0/(width/2.0/shift);
  spin = 360.0/(width/2.0/shift);
  p[0] = new Point(-width/2, height/2);
  p[1] = new Point(width/2, height/2);
  p[2] = new Point(0, -height/2);
  noStroke();
  translate(width/2, height/2);
  triBlur();
}

void triBlur(){
  fill(fillCol);
  fillCol+=fade;
  rotate(spin);
  // another interesting variation: uncomment the line below 
  // rotate(rot+=radians(spin));
  triangle(p[0].x+=shift, p[0].y-=shift/2, p[1].x-=shift, p[1].y-=shift/2, p[2].x, p[2].y+=shift); 
  if(p[0].x<0){
    // recursive call
    triBlur();
  }
}
</script><canvas width="200" height="200"></canvas></p>
<div style="height:0px;width:0px;overflow:hidden;"></div>

<pre><b>// All Examples Written by <a href="http://reas.com/">Casey Reas</a> and <a href="http://benfry.com/">Ben Fry</a>
// unless otherwise stated.</b>
Point[]p = new Point[3];
float shift = 1.0;
float fade = 0;
float fillCol = 0;
float rot = 0;
float spin = 0;

void setup(){
  size(200, 200);
  background(0);
  smooth();
  fade = 255.0/(width/2.0/shift);
  spin = 360.0/(width/2.0/shift);
  p[0] = new Point(-width/2, height/2);
  p[1] = new Point(width/2, height/2);
  p[2] = new Point(0, -height/2);
  noStroke();
  translate(width/2, height/2);
  triBlur();
}

void triBlur(){
  fill(fillCol);
  fillCol+=fade;
  rotate(spin);
  // another interesting variation: uncomment the line below 
  // rotate(rot+=radians(spin));
  triangle(p[0].x+=shift, p[0].y-=shift/2, p[1].x-=shift, p[1].y-=shift/2, p[2].x, p[2].y+=shift); 
  if(p[0].x&lt;0){
    // recursive call
    triBlur();
  }
}</pre>
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